@article{GT_2008_12_2_a6,
     author = {Grines, Viatcheslav and Laudenbach, Fran\c{c}ois},
     title = {Essential curves in handlebodies and topological contractions},
     journal = {Geometry & topology},
     pages = {981--985},
     publisher = {mathdoc},
     volume = {12},
     number = {2},
     year = {2008},
     doi = {10.2140/gt.2008.12.981},
     url = {http://geodesic.mathdoc.fr/articles/10.2140/gt.2008.12.981/}
}